<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
  </head>
  <body>
    <script type="text/javascript">
    function ln(say){

    switch (say) {
      case 'hey,girl':
      console.log('该醒醒了');
      break;
      case '壮士':
      console.log('美女在喊你');

        break;
      default:

    }

  }
  ln('hey,girl');
  ln('该醒醒了');
  </body>
</html>
